Influence of recycled aggregate quality from precast rejection on mechanical properties of self-compacting concrete
Perez Benedicto, Jose Angel ; del Rio Merino, Mercedes ; Lopez Julian, Pedro Luis (Universidad de Zaragoza) ; Salesa Bordanaba, Angel ; Acero Oliete, Alejandro
Resumen: The use of coarse aggregates from crushing pre-existing concrete in the manufacturing of new concrete needs experimental results to validate its influence in the properties of the new concrete elements.
In the present study we assessed the impact of using different proportions of replacement up to 100% of natural aggregates with recycled aggregates in the concrete properties; moreover, the effect of pre-treatments of pre-saturation, washing and the aggregates’ source (from precast concrete rejected pieces and construction and demolition waste) was analysed. The best results were obtained with dry and washed recycled aggregates, the compressive strength increment was between the 8 and 17% compared to conventional concrete. Results also pointed out that recycled aggregate that exclusively comes from precast concrete pieces lead to a better concrete mechanical characteristic than the aggregates which origin is construction and demolition waste. In addition, a clear relationship between the percentage of recycled aggregate substitution and the workability and mechanical performance of self-compacting concrete is observed. The results presented in this paper allow to state that precast concrete factories can recycle their rejected elements into recycled coarse aggregates for manufacturing new products, this will allow to protect the environment by reducing the need of raw material consumption and the C&DW; landfill.
Idioma: Inglés
DOI: 10.6036/10079
Año: 2021
Publicado en: Dyna 96, 4 (2021), 407-414
ISSN: 0012-7361
Factor impacto JCR: 2.07 (2021)
Categ. JCR: ENGINEERING, MULTIDISCIPLINARY rank: 51 / 92 = 0.554 (2021) - Q3 - T2
Factor impacto CITESCORE: 1.3 - Engineering (Q3)
Factor impacto SCIMAGO: 0.16 - Engineering (miscellaneous) (Q4)
Tipo y forma: Artículo (Versión definitiva)
Área (Departamento): Área Geodinámica Interna (Dpto. Ciencias de la Tierra)
Debe reconocer adecuadamente la autoría, proporcionar un enlace a la licencia e indicar si se han realizado cambios. Puede hacerlo de cualquier manera razonable, pero no de una manera que sugiera que tiene el apoyo del licenciador o lo recibe por el uso que hace. No puede utilizar el material para una finalidad comercial.
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In the present study we assessed the impact of using different proportions of replacement up to 100% of natural aggregates with recycled aggregates in the concrete properties; moreover, the effect of pre-treatments of pre-saturation, washing and the aggregates’ source (from precast concrete rejected pieces and construction and demolition waste) was analysed. The best results were obtained with dry and washed recycled aggregates, the compressive strength increment was between the 8 and 17% compared to conventional concrete. Results also pointed out that recycled aggregate that exclusively comes from precast concrete pieces lead to a better concrete mechanical characteristic than the aggregates which origin is construction and demolition waste. In addition, a clear relationship between the percentage of recycled aggregate substitution and the workability and mechanical performance of self-compacting concrete is observed. The results presented in this paper allow to state that precast concrete factories can recycle their rejected elements into recycled coarse aggregates for manufacturing new products, this will allow to protect the environment by reducing the need of raw material consumption and the C&DW; landfill.
Idioma: Inglés
DOI: 10.6036/10079
Año: 2021
Publicado en: Dyna 96, 4 (2021), 407-414
ISSN: 0012-7361
Factor impacto JCR: 2.07 (2021)
Categ. JCR: ENGINEERING, MULTIDISCIPLINARY rank: 51 / 92 = 0.554 (2021) - Q3 - T2
Factor impacto CITESCORE: 1.3 - Engineering (Q3)
Factor impacto SCIMAGO: 0.16 - Engineering (miscellaneous) (Q4)
Tipo y forma: Artículo (Versión definitiva)
Área (Departamento): Área Geodinámica Interna (Dpto. Ciencias de la Tierra)
Debe reconocer adecuadamente la autoría, proporcionar un enlace a la licencia e indicar si se han realizado cambios. Puede hacerlo de cualquier manera razonable, pero no de una manera que sugiera que tiene el apoyo del licenciador o lo recibe por el uso que hace. No puede utilizar el material para una finalidad comercial.Exportado de SIDERAL (2023-05-18-16:07:16)
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Registro creado el 2022-01-24, última modificación el 2023-05-19